Begin by exporting the data from Qualaroo. Log into your Qualaroo account and navigate to the survey or data set you wish to export. Use the export feature typically available in CSV or Excel format. Ensure that you select the correct data fields and date range required for your analysis.

Open the exported file using a spreadsheet application like Microsoft Excel or Google Sheets. Clean the data by removing any unnecessary columns or rows. Ensure that the data types (e.g., text, numbers, dates) are consistent and correctly formatted. Save the cleaned file in CSV format, as this is widely compatible with PostgreSQL.

Install PostgreSQL on your machine if it's not already installed. Ensure that you have the necessary permissions to create databases and tables. If you don't have PostgreSQL installed, you can download it from the official website and follow the installation instructions for your operating system.

Open the PostgreSQL command-line interface (psql) or a graphical frontend like pgAdmin. Create a new database for your Qualaroo data using the command:
```sql
CREATE DATABASE qualaroo_data;
```
Switch to the new database and create a table with columns matching those in your exported CSV file. Define appropriate data types for each column. For example:
```sql
CREATE TABLE survey_responses (
id SERIAL PRIMARY KEY,
question TEXT,
response TEXT,
timestamp TIMESTAMP
);
```

Use the `COPY` command in PostgreSQL to import data from the CSV file into the newly created table. Open psql and execute the following command:
```sql
COPY survey_responses(question, response, timestamp)
FROM '/path/to/your/file.csv' DELIMITER ',' CSV HEADER;
```
Ensure the path to the CSV file is correct and accessible by your PostgreSQL server. Adjust the column names as necessary to match your table schema.

After importing, verify that the data has been correctly inserted into your PostgreSQL table. You can do this by running a simple `SELECT` query:
```sql
SELECT * FROM survey_responses LIMIT 10;
```
Check a few records to ensure that the data appears as expected and that no rows are missing or incorrectly formatted.

To automate future data transfers, consider writing a script using a language like Python or Bash. This script can handle exporting data from Qualaroo, cleaning it, and importing it into PostgreSQL. Use cron jobs (on Unix-based systems) or Task Scheduler (on Windows) to run the script at regular intervals.

By following these steps, you can effectively transfer data from Qualaroo to a PostgreSQL database without relying on third-party connectors or integrations.